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Dependencies:   Matrix mbed

USBDevice/USBHAL_LPC17.cpp@1:ea5f520dcdc1, 2015-11-28 (annotated)

Committer:
Racer01014
Date:
Sat Nov 28 13:50:31 2015 +0000
Revision:
1:ea5f520dcdc1
Parent:
0:5e35c180ed4a 
-

Who changed what in which revision?

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Racer01014 0:5e35c180ed4a 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Racer01014 0:5e35c180ed4a 2 *
Racer01014 0:5e35c180ed4a 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Racer01014 0:5e35c180ed4a 4 * and associated documentation files (the "Software"), to deal in the Software without
Racer01014 0:5e35c180ed4a 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Racer01014 0:5e35c180ed4a 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Racer01014 0:5e35c180ed4a 7 * Software is furnished to do so, subject to the following conditions:
Racer01014 0:5e35c180ed4a 8 *
Racer01014 0:5e35c180ed4a 9 * The above copyright notice and this permission notice shall be included in all copies or
Racer01014 0:5e35c180ed4a 10 * substantial portions of the Software.
Racer01014 0:5e35c180ed4a 11 *
Racer01014 0:5e35c180ed4a 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Racer01014 0:5e35c180ed4a 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Racer01014 0:5e35c180ed4a 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Racer01014 0:5e35c180ed4a 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Racer01014 0:5e35c180ed4a 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Racer01014 0:5e35c180ed4a 17 */
Racer01014 0:5e35c180ed4a 18
Racer01014 0:5e35c180ed4a 19 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
Racer01014 0:5e35c180ed4a 20
Racer01014 0:5e35c180ed4a 21 #include "USBHAL.h"
Racer01014 0:5e35c180ed4a 22
Racer01014 0:5e35c180ed4a 23
Racer01014 0:5e35c180ed4a 24 // Get endpoint direction
Racer01014 0:5e35c180ed4a 25 #define IN_EP(endpoint) ((endpoint) & 1U ? true : false)
Racer01014 0:5e35c180ed4a 26 #define OUT_EP(endpoint) ((endpoint) & 1U ? false : true)
Racer01014 0:5e35c180ed4a 27
Racer01014 0:5e35c180ed4a 28 // Convert physical endpoint number to register bit
Racer01014 0:5e35c180ed4a 29 #define EP(endpoint) (1UL<<endpoint)
Racer01014 0:5e35c180ed4a 30
Racer01014 0:5e35c180ed4a 31 // Power Control for Peripherals register
Racer01014 0:5e35c180ed4a 32 #define PCUSB (1UL<<31)
Racer01014 0:5e35c180ed4a 33
Racer01014 0:5e35c180ed4a 34 // USB Clock Control register
Racer01014 0:5e35c180ed4a 35 #define DEV_CLK_EN (1UL<<1)
Racer01014 0:5e35c180ed4a 36 #define AHB_CLK_EN (1UL<<4)
Racer01014 0:5e35c180ed4a 37
Racer01014 0:5e35c180ed4a 38 // USB Clock Status register
Racer01014 0:5e35c180ed4a 39 #define DEV_CLK_ON (1UL<<1)
Racer01014 0:5e35c180ed4a 40 #define AHB_CLK_ON (1UL<<4)
Racer01014 0:5e35c180ed4a 41
Racer01014 0:5e35c180ed4a 42 // USB Device Interupt registers
Racer01014 0:5e35c180ed4a 43 #define FRAME (1UL<<0)
Racer01014 0:5e35c180ed4a 44 #define EP_FAST (1UL<<1)
Racer01014 0:5e35c180ed4a 45 #define EP_SLOW (1UL<<2)
Racer01014 0:5e35c180ed4a 46 #define DEV_STAT (1UL<<3)
Racer01014 0:5e35c180ed4a 47 #define CCEMPTY (1UL<<4)
Racer01014 0:5e35c180ed4a 48 #define CDFULL (1UL<<5)
Racer01014 0:5e35c180ed4a 49 #define RxENDPKT (1UL<<6)
Racer01014 0:5e35c180ed4a 50 #define TxENDPKT (1UL<<7)
Racer01014 0:5e35c180ed4a 51 #define EP_RLZED (1UL<<8)
Racer01014 0:5e35c180ed4a 52 #define ERR_INT (1UL<<9)
Racer01014 0:5e35c180ed4a 53
Racer01014 0:5e35c180ed4a 54 // USB Control register
Racer01014 0:5e35c180ed4a 55 #define RD_EN (1<<0)
Racer01014 0:5e35c180ed4a 56 #define WR_EN (1<<1)
Racer01014 0:5e35c180ed4a 57 #define LOG_ENDPOINT(endpoint) ((endpoint>>1)<<2)
Racer01014 0:5e35c180ed4a 58
Racer01014 0:5e35c180ed4a 59 // USB Receive Packet Length register
Racer01014 0:5e35c180ed4a 60 #define DV (1UL<<10)
Racer01014 0:5e35c180ed4a 61 #define PKT_RDY (1UL<<11)
Racer01014 0:5e35c180ed4a 62 #define PKT_LNGTH_MASK (0x3ff)
Racer01014 0:5e35c180ed4a 63
Racer01014 0:5e35c180ed4a 64 // Serial Interface Engine (SIE)
Racer01014 0:5e35c180ed4a 65 #define SIE_WRITE (0x01)
Racer01014 0:5e35c180ed4a 66 #define SIE_READ (0x02)
Racer01014 0:5e35c180ed4a 67 #define SIE_COMMAND (0x05)
Racer01014 0:5e35c180ed4a 68 #define SIE_CMD_CODE(phase, data) ((phase<<8)|(data<<16))
Racer01014 0:5e35c180ed4a 69
Racer01014 0:5e35c180ed4a 70 // SIE Command codes
Racer01014 0:5e35c180ed4a 71 #define SIE_CMD_SET_ADDRESS (0xD0)
Racer01014 0:5e35c180ed4a 72 #define SIE_CMD_CONFIGURE_DEVICE (0xD8)
Racer01014 0:5e35c180ed4a 73 #define SIE_CMD_SET_MODE (0xF3)
Racer01014 0:5e35c180ed4a 74 #define SIE_CMD_READ_FRAME_NUMBER (0xF5)
Racer01014 0:5e35c180ed4a 75 #define SIE_CMD_READ_TEST_REGISTER (0xFD)
Racer01014 0:5e35c180ed4a 76 #define SIE_CMD_SET_DEVICE_STATUS (0xFE)
Racer01014 0:5e35c180ed4a 77 #define SIE_CMD_GET_DEVICE_STATUS (0xFE)
Racer01014 0:5e35c180ed4a 78 #define SIE_CMD_GET_ERROR_CODE (0xFF)
Racer01014 0:5e35c180ed4a 79 #define SIE_CMD_READ_ERROR_STATUS (0xFB)
Racer01014 0:5e35c180ed4a 80
Racer01014 0:5e35c180ed4a 81 #define SIE_CMD_SELECT_ENDPOINT(endpoint) (0x00+endpoint)
Racer01014 0:5e35c180ed4a 82 #define SIE_CMD_SELECT_ENDPOINT_CLEAR_INTERRUPT(endpoint) (0x40+endpoint)
Racer01014 0:5e35c180ed4a 83 #define SIE_CMD_SET_ENDPOINT_STATUS(endpoint) (0x40+endpoint)
Racer01014 0:5e35c180ed4a 84
Racer01014 0:5e35c180ed4a 85 #define SIE_CMD_CLEAR_BUFFER (0xF2)
Racer01014 0:5e35c180ed4a 86 #define SIE_CMD_VALIDATE_BUFFER (0xFA)
Racer01014 0:5e35c180ed4a 87
Racer01014 0:5e35c180ed4a 88 // SIE Device Status register
Racer01014 0:5e35c180ed4a 89 #define SIE_DS_CON (1<<0)
Racer01014 0:5e35c180ed4a 90 #define SIE_DS_CON_CH (1<<1)
Racer01014 0:5e35c180ed4a 91 #define SIE_DS_SUS (1<<2)
Racer01014 0:5e35c180ed4a 92 #define SIE_DS_SUS_CH (1<<3)
Racer01014 0:5e35c180ed4a 93 #define SIE_DS_RST (1<<4)
Racer01014 0:5e35c180ed4a 94
Racer01014 0:5e35c180ed4a 95 // SIE Device Set Address register
Racer01014 0:5e35c180ed4a 96 #define SIE_DSA_DEV_EN (1<<7)
Racer01014 0:5e35c180ed4a 97
Racer01014 0:5e35c180ed4a 98 // SIE Configue Device register
Racer01014 0:5e35c180ed4a 99 #define SIE_CONF_DEVICE (1<<0)
Racer01014 0:5e35c180ed4a 100
Racer01014 0:5e35c180ed4a 101 // Select Endpoint register
Racer01014 0:5e35c180ed4a 102 #define SIE_SE_FE (1<<0)
Racer01014 0:5e35c180ed4a 103 #define SIE_SE_ST (1<<1)
Racer01014 0:5e35c180ed4a 104 #define SIE_SE_STP (1<<2)
Racer01014 0:5e35c180ed4a 105 #define SIE_SE_PO (1<<3)
Racer01014 0:5e35c180ed4a 106 #define SIE_SE_EPN (1<<4)
Racer01014 0:5e35c180ed4a 107 #define SIE_SE_B_1_FULL (1<<5)
Racer01014 0:5e35c180ed4a 108 #define SIE_SE_B_2_FULL (1<<6)
Racer01014 0:5e35c180ed4a 109
Racer01014 0:5e35c180ed4a 110 // Set Endpoint Status command
Racer01014 0:5e35c180ed4a 111 #define SIE_SES_ST (1<<0)
Racer01014 0:5e35c180ed4a 112 #define SIE_SES_DA (1<<5)
Racer01014 0:5e35c180ed4a 113 #define SIE_SES_RF_MO (1<<6)
Racer01014 0:5e35c180ed4a 114 #define SIE_SES_CND_ST (1<<7)
Racer01014 0:5e35c180ed4a 115
Racer01014 0:5e35c180ed4a 116
Racer01014 0:5e35c180ed4a 117 USBHAL * USBHAL::instance;
Racer01014 0:5e35c180ed4a 118
Racer01014 0:5e35c180ed4a 119 static volatile int epComplete;
Racer01014 0:5e35c180ed4a 120 static uint32_t endpointStallState;
Racer01014 0:5e35c180ed4a 121
Racer01014 0:5e35c180ed4a 122 static void SIECommand(uint32_t command) {
Racer01014 0:5e35c180ed4a 123 // The command phase of a SIE transaction
Racer01014 0:5e35c180ed4a 124 LPC_USB->USBDevIntClr = CCEMPTY;
Racer01014 0:5e35c180ed4a 125 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_COMMAND, command);
Racer01014 0:5e35c180ed4a 126 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
Racer01014 0:5e35c180ed4a 127 }
Racer01014 0:5e35c180ed4a 128
Racer01014 0:5e35c180ed4a 129 static void SIEWriteData(uint8_t data) {
Racer01014 0:5e35c180ed4a 130 // The data write phase of a SIE transaction
Racer01014 0:5e35c180ed4a 131 LPC_USB->USBDevIntClr = CCEMPTY;
Racer01014 0:5e35c180ed4a 132 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_WRITE, data);
Racer01014 0:5e35c180ed4a 133 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
Racer01014 0:5e35c180ed4a 134 }
Racer01014 0:5e35c180ed4a 135
Racer01014 0:5e35c180ed4a 136 static uint8_t SIEReadData(uint32_t command) {
Racer01014 0:5e35c180ed4a 137 // The data read phase of a SIE transaction
Racer01014 0:5e35c180ed4a 138 LPC_USB->USBDevIntClr = CDFULL;
Racer01014 0:5e35c180ed4a 139 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_READ, command);
Racer01014 0:5e35c180ed4a 140 while (!(LPC_USB->USBDevIntSt & CDFULL));
Racer01014 0:5e35c180ed4a 141 return (uint8_t)LPC_USB->USBCmdData;
Racer01014 0:5e35c180ed4a 142 }
Racer01014 0:5e35c180ed4a 143
Racer01014 0:5e35c180ed4a 144 static void SIEsetDeviceStatus(uint8_t status) {
Racer01014 0:5e35c180ed4a 145 // Write SIE device status register
Racer01014 0:5e35c180ed4a 146 SIECommand(SIE_CMD_SET_DEVICE_STATUS);
Racer01014 0:5e35c180ed4a 147 SIEWriteData(status);
Racer01014 0:5e35c180ed4a 148 }
Racer01014 0:5e35c180ed4a 149
Racer01014 0:5e35c180ed4a 150 static uint8_t SIEgetDeviceStatus(void) {
Racer01014 0:5e35c180ed4a 151 // Read SIE device status register
Racer01014 0:5e35c180ed4a 152 SIECommand(SIE_CMD_GET_DEVICE_STATUS);
Racer01014 0:5e35c180ed4a 153 return SIEReadData(SIE_CMD_GET_DEVICE_STATUS);
Racer01014 0:5e35c180ed4a 154 }
Racer01014 0:5e35c180ed4a 155
Racer01014 0:5e35c180ed4a 156 void SIEsetAddress(uint8_t address) {
Racer01014 0:5e35c180ed4a 157 // Write SIE device address register
Racer01014 0:5e35c180ed4a 158 SIECommand(SIE_CMD_SET_ADDRESS);
Racer01014 0:5e35c180ed4a 159 SIEWriteData((address & 0x7f) | SIE_DSA_DEV_EN);
Racer01014 0:5e35c180ed4a 160 }
Racer01014 0:5e35c180ed4a 161
Racer01014 0:5e35c180ed4a 162 static uint8_t SIEselectEndpoint(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 163 // SIE select endpoint command
Racer01014 0:5e35c180ed4a 164 SIECommand(SIE_CMD_SELECT_ENDPOINT(endpoint));
Racer01014 0:5e35c180ed4a 165 return SIEReadData(SIE_CMD_SELECT_ENDPOINT(endpoint));
Racer01014 0:5e35c180ed4a 166 }
Racer01014 0:5e35c180ed4a 167
Racer01014 0:5e35c180ed4a 168 static uint8_t SIEclearBuffer(void) {
Racer01014 0:5e35c180ed4a 169 // SIE clear buffer command
Racer01014 0:5e35c180ed4a 170 SIECommand(SIE_CMD_CLEAR_BUFFER);
Racer01014 0:5e35c180ed4a 171 return SIEReadData(SIE_CMD_CLEAR_BUFFER);
Racer01014 0:5e35c180ed4a 172 }
Racer01014 0:5e35c180ed4a 173
Racer01014 0:5e35c180ed4a 174 static void SIEvalidateBuffer(void) {
Racer01014 0:5e35c180ed4a 175 // SIE validate buffer command
Racer01014 0:5e35c180ed4a 176 SIECommand(SIE_CMD_VALIDATE_BUFFER);
Racer01014 0:5e35c180ed4a 177 }
Racer01014 0:5e35c180ed4a 178
Racer01014 0:5e35c180ed4a 179 static void SIEsetEndpointStatus(uint8_t endpoint, uint8_t status) {
Racer01014 0:5e35c180ed4a 180 // SIE set endpoint status command
Racer01014 0:5e35c180ed4a 181 SIECommand(SIE_CMD_SET_ENDPOINT_STATUS(endpoint));
Racer01014 0:5e35c180ed4a 182 SIEWriteData(status);
Racer01014 0:5e35c180ed4a 183 }
Racer01014 0:5e35c180ed4a 184
Racer01014 0:5e35c180ed4a 185 static uint16_t SIEgetFrameNumber(void) __attribute__ ((unused));
Racer01014 0:5e35c180ed4a 186 static uint16_t SIEgetFrameNumber(void) {
Racer01014 0:5e35c180ed4a 187 // Read current frame number
Racer01014 0:5e35c180ed4a 188 uint16_t lowByte;
Racer01014 0:5e35c180ed4a 189 uint16_t highByte;
Racer01014 0:5e35c180ed4a 190
Racer01014 0:5e35c180ed4a 191 SIECommand(SIE_CMD_READ_FRAME_NUMBER);
Racer01014 0:5e35c180ed4a 192 lowByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
Racer01014 0:5e35c180ed4a 193 highByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
Racer01014 0:5e35c180ed4a 194
Racer01014 0:5e35c180ed4a 195 return (highByte << 8) | lowByte;
Racer01014 0:5e35c180ed4a 196 }
Racer01014 0:5e35c180ed4a 197
Racer01014 0:5e35c180ed4a 198 static void SIEconfigureDevice(void) {
Racer01014 0:5e35c180ed4a 199 // SIE Configure device command
Racer01014 0:5e35c180ed4a 200 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
Racer01014 0:5e35c180ed4a 201 SIEWriteData(SIE_CONF_DEVICE);
Racer01014 0:5e35c180ed4a 202 }
Racer01014 0:5e35c180ed4a 203
Racer01014 0:5e35c180ed4a 204 static void SIEunconfigureDevice(void) {
Racer01014 0:5e35c180ed4a 205 // SIE Configure device command
Racer01014 0:5e35c180ed4a 206 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
Racer01014 0:5e35c180ed4a 207 SIEWriteData(0);
Racer01014 0:5e35c180ed4a 208 }
Racer01014 0:5e35c180ed4a 209
Racer01014 0:5e35c180ed4a 210 static void SIEconnect(void) {
Racer01014 0:5e35c180ed4a 211 // Connect USB device
Racer01014 0:5e35c180ed4a 212 uint8_t status = SIEgetDeviceStatus();
Racer01014 0:5e35c180ed4a 213 SIEsetDeviceStatus(status | SIE_DS_CON);
Racer01014 0:5e35c180ed4a 214 }
Racer01014 0:5e35c180ed4a 215
Racer01014 0:5e35c180ed4a 216
Racer01014 0:5e35c180ed4a 217 static void SIEdisconnect(void) {
Racer01014 0:5e35c180ed4a 218 // Disconnect USB device
Racer01014 0:5e35c180ed4a 219 uint8_t status = SIEgetDeviceStatus();
Racer01014 0:5e35c180ed4a 220 SIEsetDeviceStatus(status & ~SIE_DS_CON);
Racer01014 0:5e35c180ed4a 221 }
Racer01014 0:5e35c180ed4a 222
Racer01014 0:5e35c180ed4a 223
Racer01014 0:5e35c180ed4a 224 static uint8_t selectEndpointClearInterrupt(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 225 // Implemented using using EP_INT_CLR.
Racer01014 0:5e35c180ed4a 226 LPC_USB->USBEpIntClr = EP(endpoint);
Racer01014 0:5e35c180ed4a 227 while (!(LPC_USB->USBDevIntSt & CDFULL));
Racer01014 0:5e35c180ed4a 228 return (uint8_t)LPC_USB->USBCmdData;
Racer01014 0:5e35c180ed4a 229 }
Racer01014 0:5e35c180ed4a 230
Racer01014 0:5e35c180ed4a 231
Racer01014 0:5e35c180ed4a 232 static void enableEndpointEvent(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 233 // Enable an endpoint interrupt
Racer01014 0:5e35c180ed4a 234 LPC_USB->USBEpIntEn |= EP(endpoint);
Racer01014 0:5e35c180ed4a 235 }
Racer01014 0:5e35c180ed4a 236
Racer01014 0:5e35c180ed4a 237 static void disableEndpointEvent(uint8_t endpoint) __attribute__ ((unused));
Racer01014 0:5e35c180ed4a 238 static void disableEndpointEvent(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 239 // Disable an endpoint interrupt
Racer01014 0:5e35c180ed4a 240 LPC_USB->USBEpIntEn &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 241 }
Racer01014 0:5e35c180ed4a 242
Racer01014 0:5e35c180ed4a 243 static volatile uint32_t __attribute__((used)) dummyRead;
Racer01014 0:5e35c180ed4a 244 uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) {
Racer01014 0:5e35c180ed4a 245 // Read from an OUT endpoint
Racer01014 0:5e35c180ed4a 246 uint32_t size;
Racer01014 0:5e35c180ed4a 247 uint32_t i;
Racer01014 0:5e35c180ed4a 248 uint32_t data = 0;
Racer01014 0:5e35c180ed4a 249 uint8_t offset;
Racer01014 0:5e35c180ed4a 250
Racer01014 0:5e35c180ed4a 251 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | RD_EN;
Racer01014 0:5e35c180ed4a 252 while (!(LPC_USB->USBRxPLen & PKT_RDY));
Racer01014 0:5e35c180ed4a 253
Racer01014 0:5e35c180ed4a 254 size = LPC_USB->USBRxPLen & PKT_LNGTH_MASK;
Racer01014 0:5e35c180ed4a 255
Racer01014 0:5e35c180ed4a 256 offset = 0;
Racer01014 0:5e35c180ed4a 257
Racer01014 0:5e35c180ed4a 258 if (size > 0) {
Racer01014 0:5e35c180ed4a 259 for (i=0; i<size; i++) {
Racer01014 0:5e35c180ed4a 260 if (offset==0) {
Racer01014 0:5e35c180ed4a 261 // Fetch up to four bytes of data as a word
Racer01014 0:5e35c180ed4a 262 data = LPC_USB->USBRxData;
Racer01014 0:5e35c180ed4a 263 }
Racer01014 0:5e35c180ed4a 264
Racer01014 0:5e35c180ed4a 265 // extract a byte
Racer01014 0:5e35c180ed4a 266 *buffer = (data>>offset) & 0xff;
Racer01014 0:5e35c180ed4a 267 buffer++;
Racer01014 0:5e35c180ed4a 268
Racer01014 0:5e35c180ed4a 269 // move on to the next byte
Racer01014 0:5e35c180ed4a 270 offset = (offset + 8) % 32;
Racer01014 0:5e35c180ed4a 271 }
Racer01014 0:5e35c180ed4a 272 } else {
Racer01014 0:5e35c180ed4a 273 dummyRead = LPC_USB->USBRxData;
Racer01014 0:5e35c180ed4a 274 }
Racer01014 0:5e35c180ed4a 275
Racer01014 0:5e35c180ed4a 276 LPC_USB->USBCtrl = 0;
Racer01014 0:5e35c180ed4a 277
Racer01014 0:5e35c180ed4a 278 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
Racer01014 0:5e35c180ed4a 279 SIEselectEndpoint(endpoint);
Racer01014 0:5e35c180ed4a 280 SIEclearBuffer();
Racer01014 0:5e35c180ed4a 281 }
Racer01014 0:5e35c180ed4a 282
Racer01014 0:5e35c180ed4a 283 return size;
Racer01014 0:5e35c180ed4a 284 }
Racer01014 0:5e35c180ed4a 285
Racer01014 0:5e35c180ed4a 286 static void endpointWritecore(uint8_t endpoint, uint8_t *buffer, uint32_t size) {
Racer01014 0:5e35c180ed4a 287 // Write to an IN endpoint
Racer01014 0:5e35c180ed4a 288 uint32_t temp, data;
Racer01014 0:5e35c180ed4a 289 uint8_t offset;
Racer01014 0:5e35c180ed4a 290
Racer01014 0:5e35c180ed4a 291 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | WR_EN;
Racer01014 0:5e35c180ed4a 292
Racer01014 0:5e35c180ed4a 293 LPC_USB->USBTxPLen = size;
Racer01014 0:5e35c180ed4a 294 offset = 0;
Racer01014 0:5e35c180ed4a 295 data = 0;
Racer01014 0:5e35c180ed4a 296
Racer01014 0:5e35c180ed4a 297 if (size>0) {
Racer01014 0:5e35c180ed4a 298 do {
Racer01014 0:5e35c180ed4a 299 // Fetch next data byte into a word-sized temporary variable
Racer01014 0:5e35c180ed4a 300 temp = *buffer++;
Racer01014 0:5e35c180ed4a 301
Racer01014 0:5e35c180ed4a 302 // Add to current data word
Racer01014 0:5e35c180ed4a 303 temp = temp << offset;
Racer01014 0:5e35c180ed4a 304 data = data | temp;
Racer01014 0:5e35c180ed4a 305
Racer01014 0:5e35c180ed4a 306 // move on to the next byte
Racer01014 0:5e35c180ed4a 307 offset = (offset + 8) % 32;
Racer01014 0:5e35c180ed4a 308 size--;
Racer01014 0:5e35c180ed4a 309
Racer01014 0:5e35c180ed4a 310 if ((offset==0) || (size==0)) {
Racer01014 0:5e35c180ed4a 311 // Write the word to the endpoint
Racer01014 0:5e35c180ed4a 312 LPC_USB->USBTxData = data;
Racer01014 0:5e35c180ed4a 313 data = 0;
Racer01014 0:5e35c180ed4a 314 }
Racer01014 0:5e35c180ed4a 315 } while (size>0);
Racer01014 0:5e35c180ed4a 316 } else {
Racer01014 0:5e35c180ed4a 317 LPC_USB->USBTxData = 0;
Racer01014 0:5e35c180ed4a 318 }
Racer01014 0:5e35c180ed4a 319
Racer01014 0:5e35c180ed4a 320 // Clear WR_EN to cover zero length packet case
Racer01014 0:5e35c180ed4a 321 LPC_USB->USBCtrl=0;
Racer01014 0:5e35c180ed4a 322
Racer01014 0:5e35c180ed4a 323 SIEselectEndpoint(endpoint);
Racer01014 0:5e35c180ed4a 324 SIEvalidateBuffer();
Racer01014 0:5e35c180ed4a 325 }
Racer01014 0:5e35c180ed4a 326
Racer01014 0:5e35c180ed4a 327 USBHAL::USBHAL(void) {
Racer01014 0:5e35c180ed4a 328 // Disable IRQ
Racer01014 0:5e35c180ed4a 329 NVIC_DisableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 330
Racer01014 0:5e35c180ed4a 331 // fill in callback array
Racer01014 0:5e35c180ed4a 332 epCallback[0] = &USBHAL::EP1_OUT_callback;
Racer01014 0:5e35c180ed4a 333 epCallback[1] = &USBHAL::EP1_IN_callback;
Racer01014 0:5e35c180ed4a 334 epCallback[2] = &USBHAL::EP2_OUT_callback;
Racer01014 0:5e35c180ed4a 335 epCallback[3] = &USBHAL::EP2_IN_callback;
Racer01014 0:5e35c180ed4a 336 epCallback[4] = &USBHAL::EP3_OUT_callback;
Racer01014 0:5e35c180ed4a 337 epCallback[5] = &USBHAL::EP3_IN_callback;
Racer01014 0:5e35c180ed4a 338 epCallback[6] = &USBHAL::EP4_OUT_callback;
Racer01014 0:5e35c180ed4a 339 epCallback[7] = &USBHAL::EP4_IN_callback;
Racer01014 0:5e35c180ed4a 340 epCallback[8] = &USBHAL::EP5_OUT_callback;
Racer01014 0:5e35c180ed4a 341 epCallback[9] = &USBHAL::EP5_IN_callback;
Racer01014 0:5e35c180ed4a 342 epCallback[10] = &USBHAL::EP6_OUT_callback;
Racer01014 0:5e35c180ed4a 343 epCallback[11] = &USBHAL::EP6_IN_callback;
Racer01014 0:5e35c180ed4a 344 epCallback[12] = &USBHAL::EP7_OUT_callback;
Racer01014 0:5e35c180ed4a 345 epCallback[13] = &USBHAL::EP7_IN_callback;
Racer01014 0:5e35c180ed4a 346 epCallback[14] = &USBHAL::EP8_OUT_callback;
Racer01014 0:5e35c180ed4a 347 epCallback[15] = &USBHAL::EP8_IN_callback;
Racer01014 0:5e35c180ed4a 348 epCallback[16] = &USBHAL::EP9_OUT_callback;
Racer01014 0:5e35c180ed4a 349 epCallback[17] = &USBHAL::EP9_IN_callback;
Racer01014 0:5e35c180ed4a 350 epCallback[18] = &USBHAL::EP10_OUT_callback;
Racer01014 0:5e35c180ed4a 351 epCallback[19] = &USBHAL::EP10_IN_callback;
Racer01014 0:5e35c180ed4a 352 epCallback[20] = &USBHAL::EP11_OUT_callback;
Racer01014 0:5e35c180ed4a 353 epCallback[21] = &USBHAL::EP11_IN_callback;
Racer01014 0:5e35c180ed4a 354 epCallback[22] = &USBHAL::EP12_OUT_callback;
Racer01014 0:5e35c180ed4a 355 epCallback[23] = &USBHAL::EP12_IN_callback;
Racer01014 0:5e35c180ed4a 356 epCallback[24] = &USBHAL::EP13_OUT_callback;
Racer01014 0:5e35c180ed4a 357 epCallback[25] = &USBHAL::EP13_IN_callback;
Racer01014 0:5e35c180ed4a 358 epCallback[26] = &USBHAL::EP14_OUT_callback;
Racer01014 0:5e35c180ed4a 359 epCallback[27] = &USBHAL::EP14_IN_callback;
Racer01014 0:5e35c180ed4a 360 epCallback[28] = &USBHAL::EP15_OUT_callback;
Racer01014 0:5e35c180ed4a 361 epCallback[29] = &USBHAL::EP15_IN_callback;
Racer01014 0:5e35c180ed4a 362
Racer01014 0:5e35c180ed4a 363 // Enable power to USB device controller
Racer01014 0:5e35c180ed4a 364 LPC_SC->PCONP |= PCUSB;
Racer01014 0:5e35c180ed4a 365
Racer01014 0:5e35c180ed4a 366 // Enable USB clocks
Racer01014 0:5e35c180ed4a 367 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
Racer01014 0:5e35c180ed4a 368 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
Racer01014 0:5e35c180ed4a 369
Racer01014 0:5e35c180ed4a 370 // Configure pins P0.29 and P0.30 to be USB D+ and USB D-
Racer01014 0:5e35c180ed4a 371 LPC_PINCON->PINSEL1 &= 0xc3ffffff;
Racer01014 0:5e35c180ed4a 372 LPC_PINCON->PINSEL1 |= 0x14000000;
Racer01014 0:5e35c180ed4a 373
Racer01014 0:5e35c180ed4a 374 // Disconnect USB device
Racer01014 0:5e35c180ed4a 375 SIEdisconnect();
Racer01014 0:5e35c180ed4a 376
Racer01014 0:5e35c180ed4a 377 // Configure pin P2.9 to be Connect
Racer01014 0:5e35c180ed4a 378 LPC_PINCON->PINSEL4 &= 0xfffcffff;
Racer01014 0:5e35c180ed4a 379 LPC_PINCON->PINSEL4 |= 0x00040000;
Racer01014 0:5e35c180ed4a 380
Racer01014 0:5e35c180ed4a 381 // Connect must be low for at least 2.5uS
Racer01014 0:5e35c180ed4a 382 wait(0.3);
Racer01014 0:5e35c180ed4a 383
Racer01014 0:5e35c180ed4a 384 // Set the maximum packet size for the control endpoints
Racer01014 0:5e35c180ed4a 385 realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0);
Racer01014 0:5e35c180ed4a 386 realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0);
Racer01014 0:5e35c180ed4a 387
Racer01014 0:5e35c180ed4a 388 // Attach IRQ
Racer01014 0:5e35c180ed4a 389 instance = this;
Racer01014 0:5e35c180ed4a 390 NVIC_SetVector(USB_IRQn, (uint32_t)&_usbisr);
Racer01014 0:5e35c180ed4a 391
Racer01014 0:5e35c180ed4a 392 // Enable interrupts for device events and EP0
Racer01014 0:5e35c180ed4a 393 LPC_USB->USBDevIntEn = EP_SLOW | DEV_STAT | FRAME;
Racer01014 0:5e35c180ed4a 394 enableEndpointEvent(EP0IN);
Racer01014 0:5e35c180ed4a 395 enableEndpointEvent(EP0OUT);
Racer01014 0:5e35c180ed4a 396 }
Racer01014 0:5e35c180ed4a 397
Racer01014 0:5e35c180ed4a 398 USBHAL::~USBHAL(void) {
Racer01014 0:5e35c180ed4a 399 // Ensure device disconnected
Racer01014 0:5e35c180ed4a 400 SIEdisconnect();
Racer01014 0:5e35c180ed4a 401 // Disable USB interrupts
Racer01014 0:5e35c180ed4a 402 NVIC_DisableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 403 }
Racer01014 0:5e35c180ed4a 404
Racer01014 0:5e35c180ed4a 405 void USBHAL::connect(void) {
Racer01014 0:5e35c180ed4a 406 NVIC_EnableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 407 // Connect USB device
Racer01014 0:5e35c180ed4a 408 SIEconnect();
Racer01014 0:5e35c180ed4a 409 }
Racer01014 0:5e35c180ed4a 410
Racer01014 0:5e35c180ed4a 411 void USBHAL::disconnect(void) {
Racer01014 0:5e35c180ed4a 412 NVIC_DisableIRQ(USB_IRQn);
Racer01014 0:5e35c180ed4a 413 // Disconnect USB device
Racer01014 0:5e35c180ed4a 414 SIEdisconnect();
Racer01014 0:5e35c180ed4a 415 }
Racer01014 0:5e35c180ed4a 416
Racer01014 0:5e35c180ed4a 417 void USBHAL::configureDevice(void) {
Racer01014 0:5e35c180ed4a 418 SIEconfigureDevice();
Racer01014 0:5e35c180ed4a 419 }
Racer01014 0:5e35c180ed4a 420
Racer01014 0:5e35c180ed4a 421 void USBHAL::unconfigureDevice(void) {
Racer01014 0:5e35c180ed4a 422 SIEunconfigureDevice();
Racer01014 0:5e35c180ed4a 423 }
Racer01014 0:5e35c180ed4a 424
Racer01014 0:5e35c180ed4a 425 void USBHAL::setAddress(uint8_t address) {
Racer01014 0:5e35c180ed4a 426 SIEsetAddress(address);
Racer01014 0:5e35c180ed4a 427 }
Racer01014 0:5e35c180ed4a 428
Racer01014 0:5e35c180ed4a 429 void USBHAL::EP0setup(uint8_t *buffer) {
Racer01014 0:5e35c180ed4a 430 endpointReadcore(EP0OUT, buffer);
Racer01014 0:5e35c180ed4a 431 }
Racer01014 0:5e35c180ed4a 432
Racer01014 0:5e35c180ed4a 433 void USBHAL::EP0read(void) {
Racer01014 0:5e35c180ed4a 434 // Not required
Racer01014 0:5e35c180ed4a 435 }
Racer01014 0:5e35c180ed4a 436
Racer01014 0:5e35c180ed4a 437 void USBHAL::EP0readStage(void) {
Racer01014 0:5e35c180ed4a 438 // Not required
Racer01014 0:5e35c180ed4a 439 }
Racer01014 0:5e35c180ed4a 440
Racer01014 0:5e35c180ed4a 441 uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
Racer01014 0:5e35c180ed4a 442 return endpointReadcore(EP0OUT, buffer);
Racer01014 0:5e35c180ed4a 443 }
Racer01014 0:5e35c180ed4a 444
Racer01014 0:5e35c180ed4a 445 void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
Racer01014 0:5e35c180ed4a 446 endpointWritecore(EP0IN, buffer, size);
Racer01014 0:5e35c180ed4a 447 }
Racer01014 0:5e35c180ed4a 448
Racer01014 0:5e35c180ed4a 449 void USBHAL::EP0getWriteResult(void) {
Racer01014 0:5e35c180ed4a 450 // Not required
Racer01014 0:5e35c180ed4a 451 }
Racer01014 0:5e35c180ed4a 452
Racer01014 0:5e35c180ed4a 453 void USBHAL::EP0stall(void) {
Racer01014 0:5e35c180ed4a 454 // This will stall both control endpoints
Racer01014 0:5e35c180ed4a 455 stallEndpoint(EP0OUT);
Racer01014 0:5e35c180ed4a 456 }
Racer01014 0:5e35c180ed4a 457
Racer01014 0:5e35c180ed4a 458 EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
Racer01014 0:5e35c180ed4a 459 return EP_PENDING;
Racer01014 0:5e35c180ed4a 460 }
Racer01014 0:5e35c180ed4a 461
Racer01014 0:5e35c180ed4a 462 EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) {
Racer01014 0:5e35c180ed4a 463
Racer01014 0:5e35c180ed4a 464 //for isochronous endpoint, we don't wait an interrupt
Racer01014 0:5e35c180ed4a 465 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
Racer01014 0:5e35c180ed4a 466 if (!(epComplete & EP(endpoint)))
Racer01014 0:5e35c180ed4a 467 return EP_PENDING;
Racer01014 0:5e35c180ed4a 468 }
Racer01014 0:5e35c180ed4a 469
Racer01014 0:5e35c180ed4a 470 *bytesRead = endpointReadcore(endpoint, buffer);
Racer01014 0:5e35c180ed4a 471 epComplete &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 472 return EP_COMPLETED;
Racer01014 0:5e35c180ed4a 473 }
Racer01014 0:5e35c180ed4a 474
Racer01014 0:5e35c180ed4a 475 EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
Racer01014 0:5e35c180ed4a 476 if (getEndpointStallState(endpoint)) {
Racer01014 0:5e35c180ed4a 477 return EP_STALLED;
Racer01014 0:5e35c180ed4a 478 }
Racer01014 0:5e35c180ed4a 479
Racer01014 0:5e35c180ed4a 480 epComplete &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 481
Racer01014 0:5e35c180ed4a 482 endpointWritecore(endpoint, data, size);
Racer01014 0:5e35c180ed4a 483 return EP_PENDING;
Racer01014 0:5e35c180ed4a 484 }
Racer01014 0:5e35c180ed4a 485
Racer01014 0:5e35c180ed4a 486 EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 487 if (epComplete & EP(endpoint)) {
Racer01014 0:5e35c180ed4a 488 epComplete &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 489 return EP_COMPLETED;
Racer01014 0:5e35c180ed4a 490 }
Racer01014 0:5e35c180ed4a 491
Racer01014 0:5e35c180ed4a 492 return EP_PENDING;
Racer01014 0:5e35c180ed4a 493 }
Racer01014 0:5e35c180ed4a 494
Racer01014 0:5e35c180ed4a 495 bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags) {
Racer01014 0:5e35c180ed4a 496 // Realise an endpoint
Racer01014 0:5e35c180ed4a 497 LPC_USB->USBDevIntClr = EP_RLZED;
Racer01014 0:5e35c180ed4a 498 LPC_USB->USBReEp |= EP(endpoint);
Racer01014 0:5e35c180ed4a 499 LPC_USB->USBEpInd = endpoint;
Racer01014 0:5e35c180ed4a 500 LPC_USB->USBMaxPSize = maxPacket;
Racer01014 0:5e35c180ed4a 501
Racer01014 0:5e35c180ed4a 502 while (!(LPC_USB->USBDevIntSt & EP_RLZED));
Racer01014 0:5e35c180ed4a 503 LPC_USB->USBDevIntClr = EP_RLZED;
Racer01014 0:5e35c180ed4a 504
Racer01014 0:5e35c180ed4a 505 // Clear stall state
Racer01014 0:5e35c180ed4a 506 endpointStallState &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 507
Racer01014 0:5e35c180ed4a 508 enableEndpointEvent(endpoint);
Racer01014 0:5e35c180ed4a 509 return true;
Racer01014 0:5e35c180ed4a 510 }
Racer01014 0:5e35c180ed4a 511
Racer01014 0:5e35c180ed4a 512 void USBHAL::stallEndpoint(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 513 // Stall an endpoint
Racer01014 0:5e35c180ed4a 514 if ( (endpoint==EP0IN) || (endpoint==EP0OUT) ) {
Racer01014 0:5e35c180ed4a 515 // Conditionally stall both control endpoints
Racer01014 0:5e35c180ed4a 516 SIEsetEndpointStatus(EP0OUT, SIE_SES_CND_ST);
Racer01014 0:5e35c180ed4a 517 } else {
Racer01014 0:5e35c180ed4a 518 SIEsetEndpointStatus(endpoint, SIE_SES_ST);
Racer01014 0:5e35c180ed4a 519
Racer01014 0:5e35c180ed4a 520 // Update stall state
Racer01014 0:5e35c180ed4a 521 endpointStallState |= EP(endpoint);
Racer01014 0:5e35c180ed4a 522 }
Racer01014 0:5e35c180ed4a 523 }
Racer01014 0:5e35c180ed4a 524
Racer01014 0:5e35c180ed4a 525 void USBHAL::unstallEndpoint(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 526 // Unstall an endpoint. The endpoint will also be reinitialised
Racer01014 0:5e35c180ed4a 527 SIEsetEndpointStatus(endpoint, 0);
Racer01014 0:5e35c180ed4a 528
Racer01014 0:5e35c180ed4a 529 // Update stall state
Racer01014 0:5e35c180ed4a 530 endpointStallState &= ~EP(endpoint);
Racer01014 0:5e35c180ed4a 531 }
Racer01014 0:5e35c180ed4a 532
Racer01014 0:5e35c180ed4a 533 bool USBHAL::getEndpointStallState(uint8_t endpoint) {
Racer01014 0:5e35c180ed4a 534 // Returns true if endpoint stalled
Racer01014 0:5e35c180ed4a 535 return endpointStallState & EP(endpoint);
Racer01014 0:5e35c180ed4a 536 }
Racer01014 0:5e35c180ed4a 537
Racer01014 0:5e35c180ed4a 538 void USBHAL::remoteWakeup(void) {
Racer01014 0:5e35c180ed4a 539 // Remote wakeup
Racer01014 0:5e35c180ed4a 540 uint8_t status;
Racer01014 0:5e35c180ed4a 541
Racer01014 0:5e35c180ed4a 542 // Enable USB clocks
Racer01014 0:5e35c180ed4a 543 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
Racer01014 0:5e35c180ed4a 544 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
Racer01014 0:5e35c180ed4a 545
Racer01014 0:5e35c180ed4a 546 status = SIEgetDeviceStatus();
Racer01014 0:5e35c180ed4a 547 SIEsetDeviceStatus(status & ~SIE_DS_SUS);
Racer01014 0:5e35c180ed4a 548 }
Racer01014 0:5e35c180ed4a 549
Racer01014 0:5e35c180ed4a 550 void USBHAL::_usbisr(void) {
Racer01014 0:5e35c180ed4a 551 instance->usbisr();
Racer01014 0:5e35c180ed4a 552 }
Racer01014 0:5e35c180ed4a 553
Racer01014 0:5e35c180ed4a 554
Racer01014 0:5e35c180ed4a 555 void USBHAL::usbisr(void) {
Racer01014 0:5e35c180ed4a 556 uint8_t devStat;
Racer01014 0:5e35c180ed4a 557
Racer01014 0:5e35c180ed4a 558 if (LPC_USB->USBDevIntSt & FRAME) {
Racer01014 0:5e35c180ed4a 559 // Start of frame event
Racer01014 0:5e35c180ed4a 560 SOF(SIEgetFrameNumber());
Racer01014 0:5e35c180ed4a 561 // Clear interrupt status flag
Racer01014 0:5e35c180ed4a 562 LPC_USB->USBDevIntClr = FRAME;
Racer01014 0:5e35c180ed4a 563 }
Racer01014 0:5e35c180ed4a 564
Racer01014 0:5e35c180ed4a 565 if (LPC_USB->USBDevIntSt & DEV_STAT) {
Racer01014 0:5e35c180ed4a 566 // Device Status interrupt
Racer01014 0:5e35c180ed4a 567 // Must clear the interrupt status flag before reading the device status from the SIE
Racer01014 0:5e35c180ed4a 568 LPC_USB->USBDevIntClr = DEV_STAT;
Racer01014 0:5e35c180ed4a 569
Racer01014 0:5e35c180ed4a 570 // Read device status from SIE
Racer01014 0:5e35c180ed4a 571 devStat = SIEgetDeviceStatus();
Racer01014 0:5e35c180ed4a 572 //printf("devStat: %d\r\n", devStat);
Racer01014 0:5e35c180ed4a 573
Racer01014 0:5e35c180ed4a 574 if (devStat & SIE_DS_SUS_CH) {
Racer01014 0:5e35c180ed4a 575 // Suspend status changed
Racer01014 0:5e35c180ed4a 576 if((devStat & SIE_DS_SUS) != 0) {
Racer01014 0:5e35c180ed4a 577 suspendStateChanged(0);
Racer01014 0:5e35c180ed4a 578 }
Racer01014 0:5e35c180ed4a 579 }
Racer01014 0:5e35c180ed4a 580
Racer01014 0:5e35c180ed4a 581 if (devStat & SIE_DS_RST) {
Racer01014 0:5e35c180ed4a 582 // Bus reset
Racer01014 0:5e35c180ed4a 583 if((devStat & SIE_DS_SUS) == 0) {
Racer01014 0:5e35c180ed4a 584 suspendStateChanged(1);
Racer01014 0:5e35c180ed4a 585 }
Racer01014 0:5e35c180ed4a 586 busReset();
Racer01014 0:5e35c180ed4a 587 }
Racer01014 0:5e35c180ed4a 588 }
Racer01014 0:5e35c180ed4a 589
Racer01014 0:5e35c180ed4a 590 if (LPC_USB->USBDevIntSt & EP_SLOW) {
Racer01014 0:5e35c180ed4a 591 // (Slow) Endpoint Interrupt
Racer01014 0:5e35c180ed4a 592
Racer01014 0:5e35c180ed4a 593 // Process each endpoint interrupt
Racer01014 0:5e35c180ed4a 594 if (LPC_USB->USBEpIntSt & EP(EP0OUT)) {
Racer01014 0:5e35c180ed4a 595 if (selectEndpointClearInterrupt(EP0OUT) & SIE_SE_STP) {
Racer01014 0:5e35c180ed4a 596 // this is a setup packet
Racer01014 0:5e35c180ed4a 597 EP0setupCallback();
Racer01014 0:5e35c180ed4a 598 } else {
Racer01014 0:5e35c180ed4a 599 EP0out();
Racer01014 0:5e35c180ed4a 600 }
Racer01014 0:5e35c180ed4a 601 LPC_USB->USBDevIntClr = EP_SLOW;
Racer01014 0:5e35c180ed4a 602 }
Racer01014 0:5e35c180ed4a 603
Racer01014 0:5e35c180ed4a 604 if (LPC_USB->USBEpIntSt & EP(EP0IN)) {
Racer01014 0:5e35c180ed4a 605 selectEndpointClearInterrupt(EP0IN);
Racer01014 0:5e35c180ed4a 606 LPC_USB->USBDevIntClr = EP_SLOW;
Racer01014 0:5e35c180ed4a 607 EP0in();
Racer01014 0:5e35c180ed4a 608 }
Racer01014 0:5e35c180ed4a 609
Racer01014 0:5e35c180ed4a 610 for (uint8_t num = 2; num < 16*2; num++) {
Racer01014 0:5e35c180ed4a 611 if (LPC_USB->USBEpIntSt & EP(num)) {
Racer01014 0:5e35c180ed4a 612 selectEndpointClearInterrupt(num);
Racer01014 0:5e35c180ed4a 613 epComplete |= EP(num);
Racer01014 0:5e35c180ed4a 614 LPC_USB->USBDevIntClr = EP_SLOW;
Racer01014 0:5e35c180ed4a 615 if ((instance->*(epCallback[num - 2]))()) {
Racer01014 0:5e35c180ed4a 616 epComplete &= ~EP(num);
Racer01014 0:5e35c180ed4a 617 }
Racer01014 0:5e35c180ed4a 618 }
Racer01014 0:5e35c180ed4a 619 }
Racer01014 0:5e35c180ed4a 620 }
Racer01014 0:5e35c180ed4a 621 }
Racer01014 0:5e35c180ed4a 622
Racer01014 0:5e35c180ed4a 623 #endif